LXR linux/arch/powerpc/boot/flatdevtree

   1/*
   2 * This file does the necessary interface mapping between the bootwrapper
   3 * device tree operations and the interface provided by shared source
   4 * files flatdevicetree.[ch].
   5 *
   6 * Author: Mark A. Greer <mgreer@mvista.com>
   7 *
   8 * 2006 (c) MontaVista Software, Inc.  This file is licensed under
   9 * the terms of the GNU General Public License version 2.  This program
  10 * is licensed "as is" without any warranty of any kind, whether express
  11 * or implied.
  12 */
  13#include <stddef.h>
  14#include "flatdevtree.h"
  15#include "ops.h"
  16
  17static struct ft_cxt cxt;
  18
  19static void *fdtm_finddevice(const char *name)
  20{
  21        return ft_find_device(&cxt, name);
  22}
  23
  24static int fdtm_getprop(const void *phandle, const char *propname,
  25                        void *buf, const int buflen)
  26{
  27        return ft_get_prop(&cxt, phandle, propname, buf, buflen);
  28}
  29
  30static int fdtm_setprop(const void *phandle, const char *propname,
  31                        const void *buf, const int buflen)
  32{
  33        return ft_set_prop(&cxt, phandle, propname, buf, buflen);
  34}
  35
  36static void *fdtm_get_parent(const void *phandle)
  37{
  38        return ft_get_parent(&cxt, phandle);
  39}
  40
  41static void *fdtm_create_node(const void *phandle, const char *name)
  42{
  43        return ft_create_node(&cxt, phandle, name);
  44}
  45
  46static void *fdtm_find_node_by_prop_value(const void *prev,
  47                                          const char *propname,
  48                                          const char *propval,
  49                                          int proplen)
  50{
  51        return ft_find_node_by_prop_value(&cxt, prev, propname,
  52                                          propval, proplen);
  53}
  54
  55static unsigned long fdtm_finalize(void)
  56{
  57        ft_end_tree(&cxt);
  58        return (unsigned long)cxt.bph;
  59}
  60
  61int ft_init(void *dt_blob, unsigned int max_size, unsigned int max_find_device)
  62{
  63        dt_ops.finddevice = fdtm_finddevice;
  64        dt_ops.getprop = fdtm_getprop;
  65        dt_ops.setprop = fdtm_setprop;
  66        dt_ops.get_parent = fdtm_get_parent;
  67        dt_ops.create_node = fdtm_create_node;
  68        dt_ops.find_node_by_prop_value = fdtm_find_node_by_prop_value;
  69        dt_ops.finalize = fdtm_finalize;
  70
  71        return ft_open(&cxt, dt_blob, max_size, max_find_device,
  72                        platform_ops.realloc);
  73}
  74